Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Income Statement [Abstract]
Net sales	$ 576.5	$ 809.9	$ 1,286.6	$ 1,614.8
Cost of sales	373.0	508.5	827.3	1,006.1
Gross profit	203.5	301.4	459.3	608.7
Selling, general and administrative expenses	182.9	198.0	376.3	398.5
Transaction-related income	0.0	(0.7)	(0.2)	(0.3)
Asset impairments	3.7	0.0	3.7	0.0
Restructuring expenses	17.2	0.3	19.1	3.6
Other operating (income) expenses	(3.7)	1.9	(1.4)	4.8
Operating income from continuing operations	3.4	101.9	61.8	202.1
Interest expense	34.3	39.2	71.0	77.3
Other income	(3.7)	(1.5)	(5.8)	(4.8)
(Loss) income from continuing operations before taxes	(27.2)	64.2	(3.4)	129.6
Income tax expense (benefit)	0.6	37.5	(15.5)	(502.2)
Net (loss) income from continuing operations	(27.8)	26.7	12.1	631.8
Loss on disposal of discontinued operations, net of tax, respectively, of $0, $0, $0 and $0	0.2	0.2	0.2	0.5
Net (loss) income	(28.0)	26.5	11.9	631.3
Less: non-controlling interests	(5.6)	5.0	(1.3)	(3.9)
Net (loss) income attributable to shareholders	$ (22.4)	$ 21.5	$ 13.2	$ 635.2
Basic
(Loss) earnings per share from continuing operations (in usd per share)	$ (0.08)	$ 0.07	$ 0.05	$ 2.19
Earnings per share from discontinued operations (in usd per share)	0	0	0	0
(Loss) earnings per share (in usd per share)	(0.08)	0.07	0.05	2.19
Diluted
(Loss) earnings per share from continuing operations (in usd per share)	(0.08)	0.07	0.05	2.18
Earnings per share from discontinued operations (in usd per share)	0	0	0	0
(Loss) earnings per share (in usd per share)	$ (0.08)	$ 0.07	$ 0.05	$ 2.18